Develop Reference

Issue in getting Current Location with GPS_PROVIDER and NETWORK_PROVIDER

I trying to get current location in my android application. But, every time I am getting my Location as null. I have done as below :
private void getLocation() {
try {
if (ActivityCompat.checkSelfPermission((Activity) mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission((Activity) mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
Constant.displayLogE(">> PErmission >> ", ">> not granted");
return;
} else {
mLocationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
boolean isGPSEnabled = mLocationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
boolean isNetworkEnabled = mLocationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
if (isNetworkEnabled) {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
loadFilterListData();
}
}
} else if (isGPSEnabled) {
if (mLocation == null) {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
loadFilterListData();
}
}
}
}
if (mLocation == null) {
Constant.displayToast(mContext, "Location not fetched. Please, try again.");
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
I don't know the solution for this as i am checking for both NETWORK_PROVIDER as well as GPS_PROVIDER. But, getting mLocation as null every time.
I have given necessary permissions in my Manifest file also.
What might be the issue ?
Thanks.

This is my MapsActivity class with location updates, you can update your code using my code
package com.example.vishal.gpsloc;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import org.fusesource.mqtt.client.BlockingConnection;
import org.fusesource.mqtt.client.MQTT;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
import com.google.android.gms.vision.barcode.Barcode;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks, GoogleMap.OnMarkerDragListener, GoogleMap.OnMapLongClickListener, com.google.android.gms.location.LocationListener, GoogleMap.OnMapClickListener, ResultCallback<Status> {
GoogleMap mMap;
private MarkerOptions marker1, marker2;
private final int GEOFENCE_REQ_CODE = 0;
private GoogleApiClient googleApiClient;
private double longitude;
private double latitude;
double lat,lon;
List latt=new ArrayList();
List longi=new ArrayList();
Location lastLocation;
String ip=null;
SharedPreferences pref;
SharedPreferences.Editor editor;
int flag=1;String cityName,stateName,countryName,root;
private ArrayList<LatLng> points; //added
Polyline line; //added
File log,myDir;
private static MQTT mqtt;
private static BlockingConnection connection;
private final int UPDATE_INTERVAL = 60000 ;
private final int FASTEST_INTERVAL = 60000 ;
private static final float SMALLEST_DISPLACEMENT = 0.25F; //quarter of a meter
String currentDateTimeString = DateFormat.getDateTimeInstance().format(new Date()), cord, devname, devid = android.os.Build.SERIAL;
#Override
public void onBackPressed() {
super.onBackPressed();
}
#Override
protected void onCreate(Bundle savedInstanceState) {
try {
super.onCreate(savedInstanceState);
CheckConnection();
if (!isGooglePlayServicesAvailable()) {
System.out.println(" My Google Play Not Available");
finish();
}
points = new ArrayList<LatLng>(); //added
setContentView(R.layout.route_mapper);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
InitializeDB();
//Initializing googleApiClient
googleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
googleApiClient.connect();
findViewById(R.id.fab).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
PunchStop();
}
});
if (this.mMap != null) {
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
mMap.setMyLocationEnabled(true);
return;
}
}
} catch (Exception e) {
e.printStackTrace();
}
mqtt=new MQTT();
try{
if(ip==null){
System.out.println("Mqtt Initialized in Maps Activity");
ip="demo.aiotm.in:1883";
}
//mqtt.setHost("tcp://"+ip);
mqtt.setHost("tcp://10.30.60.242:1883");
connection = mqtt.blockingConnection();
connection.connect();
}catch (Exception e){
e.printStackTrace();
}
}
private void InitializeDB() {
pref = getApplicationContext().getSharedPreferences("MyPref", 0); // 0 - for private mode
editor = pref.edit();
if (isExternalStorageReadable() == true && isExternalStorageWritable() == true) {
root = Environment.getExternalStorageDirectory().toString();
myDir = new File(root + "/GpsTracking");
myDir.mkdirs();
log = new File (myDir, "GpsLog");
if (myDir.exists()) {
System.out.println("Directory Already Exsists............");
} else {
try {
myDir = new File(root + "/GpsTracking");
myDir.mkdirs();
log = new File (myDir, "GpsLog");
} catch (Exception e) {
Toast.makeText(getBaseContext()
,e.toString(),
Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}else {Toast.makeText(getBaseContext(),
"Permissions Not Availiable'",
Toast.LENGTH_SHORT).show();}
}
private void PunchStop() {
System.out.println("stop Location is "+latitude+","+longitude+"\t"+cityName );
try {
String currentDateTimeString = DateFormat.getDateTimeInstance().format(new Date());
PrintWriter out = new PrintWriter(new FileWriter(log, true));
out.append(currentDateTimeString+"\t"+latitude+","+longitude+"\t"+cityName+"\n");
out.close();
Toast.makeText(getBaseContext(),
"Done writing SD 'GpsLog.txt'",
Toast.LENGTH_SHORT).show();
}catch (Exception e){e.printStackTrace();}
}
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
return false;
}
}
private void CheckConnection() {
String answer=null;
ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
if (null != activeNetwork) {
if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
answer="You are connected to a WiFi Network";
if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
answer="You are connected to a Mobile Network";
}
else
answer = "No internet Connectivity";
Toast.makeText(getApplicationContext(), answer, Toast.LENGTH_LONG).show();
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
getCurrentLocation();
mMap.setOnMapLongClickListener(this);
mMap.setOnMapClickListener(this);
}
#Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
if( keyCode == KeyEvent.KEYCODE_POWER ) {
//Handle what you want in long press.
Toast.makeText(getApplicationContext(),"Power Key Pressed",Toast.LENGTH_LONG).show();
flag=1;
return true;
}
return super.onKeyLongPress(keyCode, event);
}
private void getCurrentLocation() {
//mMap.clear();
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
if (location != null) {
//Getting longitude and latitude
longitude = location.getLongitude();
latitude = location.getLatitude();
System.out.println("Parameters are ::" + latitude + ":" + longitude);
//moving the map to location
moveMap();
}
}
private void moveMap() {
/**
* Creating the latlng object to store lat, long coordinates
* adding marker to map
* move the camera with animation
*/
LatLng latLng = new LatLng(latitude, longitude);
try {
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = null;
addresses = geocoder.getFromLocation(latitude, longitude, 1);
cityName = addresses.get(0).getAddressLine(0);
stateName = addresses.get(0).getAddressLine(1);
countryName = addresses.get(0).getAddressLine(2);
} catch (IOException e) {
e.printStackTrace();
}
mMap.addMarker(new MarkerOptions()
.position(latLng)
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA))
.draggable(true)
.title(cityName))
.showInfoWindow();
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
mMap.getUiSettings().setZoomControlsEnabled(true);
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
Log.i("info", "Connection Failed");
try {
// connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onConnected(#Nullable Bundle bundle) {
Toast.makeText(MapsActivity.this, "Connected", Toast.LENGTH_SHORT).show();
getCurrentLocation();
Log.i("info", "onConnected()");
getLastKnownLocation();
}
private void getLastKnownLocation() {
Log.d("INFO", "getLastKnownLocation()");
System.out.println("info :: getLastKnownLocation");
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
lastLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
if (lastLocation != null) {
Log.i("INFO", "LasKnown location. " +
"Long: " + lastLocation.getLongitude() +
" | Lat: " + lastLocation.getLatitude());
writeLastLocation();
startLocationUpdates();
} else {
Log.w("INFO", "No location retrieved yet");
startLocationUpdates();
}
}
private LocationRequest locationRequest;
// Start location Updatess
private void startLocationUpdates() {
Log.i("INFO", "startLocationUpdates()");
pref = getApplicationContext().getSharedPreferences("MyPref", 0); // 0 - for private mode
editor = pref.edit();
locationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setSmallestDisplacement(SMALLEST_DISPLACEMENT)
.setFastestInterval(FASTEST_INTERVAL);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, (com.google.android.gms.location.LocationListener) this);
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onMarkerDragStart(Marker marker) {
}
#Override
public void onMarkerDrag(Marker marker) {
}
#Override
public void onMarkerDragEnd(Marker marker) {
}
#Override
public void onMapLongClick(LatLng latLng) {
mMap.clear();
marker1 = null;
marker2 = null;
getCurrentLocation();
}
#Override
protected void onStart() {
googleApiClient.connect();
super.onStart();
}
#Override
protected void onStop() {
googleApiClient.disconnect();
super.onStop();
}
#Override
public void onMapClick(LatLng latLng) {
}
#Override
public void onLocationChanged(Location location) {
Log.d("INFO", "onLocationChanged ["+location+"]");
try {
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = null;
addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
cityName = addresses.get(0).getAddressLine(0);
stateName = addresses.get(0).getAddressLine(1);
countryName = addresses.get(0).getAddressLine(2);
} catch (IOException e) {
e.printStackTrace();
}
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
mMap.addMarker(new MarkerOptions()
.position(latLng)
.draggable(true)
.title(cityName))
.showInfoWindow();
points.add(latLng);
redrawline();
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
mMap.getUiSettings().setZoomControlsEnabled(true);
lastLocation = location;
writeActualLocation(location);
}
private void redrawline() {
mMap.clear(); //clears all Markers and Polylines
PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for (int i = 0; i < points.size(); i++) {
LatLng point = points.get(i);
options.add(point);
}
getCurrentLocation(); //add Marker in current position
line = mMap.addPolyline(options); //add Polyline
}
// Write location coordinates on UI
private void writeActualLocation(Location location) {
Log.d( "Actual Lat: ", String.valueOf(location.getLatitude()));
Log.d( "Actual Long: ", String.valueOf(location.getLongitude()));
lat=location.getLatitude();
lon=location.getLongitude();
LatLng latLng=new LatLng(lat,lon);
mMap.addMarker(new MarkerOptions()
.position(latLng));
}
private void writeLastLocation() {
writeActualLocation(lastLocation);
}
#Override
public void onResult(#NonNull Status status) {
Log.i("INFO", "onResult: " + status);
if ( status.isSuccess() ) {
System.out.println("Status Succes");
Toast.makeText(getApplicationContext(),"Status Succes",Toast.LENGTH_LONG).show();
// drawGeofence();
} else {
System.out.println("Status failed");
Toast.makeText(getApplicationContext(),"Status Failed",Toast.LENGTH_LONG).show();
}
}
/* Checks if external storage is available for read and write */
public boolean isExternalStorageWritable() {
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
return true;
}
return false;
}
/* Checks if external storage is available to at least read */
public boolean isExternalStorageReadable() {
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state) ||
Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
return true;
}
return false;
}
}

mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
0,
0, this); // 'this' is onLocationChanged()
#Override
public void onLocationChanged(Location location) {
mCurrentLatitude = location.getLatitude();
mCurrentLongitude = location.getLongitude();
}

User has to on the location service manually. Here is the code.Use the following method to turn on location services. Also place manifest permissions
public void checkLocationService() {
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
boolean gps_enabled = false;
boolean network_enabled = false;
try {
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
}
try {
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
}
if (!gps_enabled && !network_enabled) {
// notify user
final AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("GPS Not Enabled");
dialog.setCancelable(false);
dialog.setPositiveButton("Set", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
// TODO Auto-generated method stub
Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(myIntent);
//get gps
}
});
dialog.setNegativeButton("Skip", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
// TODO Auto-generated method stub
}
});
dialog.show();
}
}
Permissions:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"
/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

as JayDeep Patel referenced me for the Answer,
I have used fused google api , to get the accurate location inside my onConnected() method as below : (got success :))
pls. check it out : its really works :
private void getLocation() {
try {
if (ActivityCompat.checkSelfPermission((Activity) mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission((Activity) mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
Constant.displayLogE(">> PErmission >> ", ">> not granted");
return;
} else {
mLocationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
boolean isGPSEnabled = mLocationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
boolean isNetworkEnabled = mLocationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
if (isNetworkEnabled) {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
loadFilterListData();
} else {
mCurrentLatitude = mLastLocation.getLatitude();
mCurrentLongitude = mLastLocation.getLongitude();
loadFilterListData();
}
}
} else if (isGPSEnabled) {
if (mLocation == null) {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
loadFilterListData();
} else {
mCurrentLatitude = mLastLocation.getLatitude();
mCurrentLongitude = mLastLocation.getLongitude();
loadFilterListData();
}
}
}
}
if (mLastLocation == null) {
Constant.displayToast(mContext, "Location not fetched. Please, try again.");
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
and below is my onConnected() method :
#Override
public void onConnected(#Nullable Bundle bundle) {
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
// here we go you can see current lat long.
Log.e(TAG, "onConnected: " + String.valueOf(mLastLocation.getLatitude()) + ":" + String.valueOf(mLastLocation.getLongitude()));
}
}

Try GoogleApiClient to get user Current Location
Sample Code:
First you need to build a connection to googleApiclient
private synchronized void buildGoogleApiClient(){
mGoogleApiClient = new GoogleApiClient.Builder(YourApplication.getContext())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
Ask for Permission for Android 6.0 and above version
public void checkLocationPermission(){
if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
// You don't have the permission you need to request it
ActivityCompat.requestPermissions(this, Manifest.permission.ACCESS_FINE_LOCATION), REQ_CODE);
}else{
// You have the permission.
requestLocationAccess();
}
}
Then implement onRequestPermissionResult to check that user granted permission or not
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
requestLocationAccess();
} else {
Snackbar.make(findViewById(android.R.id.content), "Please Allow to access to your Location",
Snackbar.LENGTH_LONG).setAction("Allow",
new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getPackageName()));
startActivity(intent);
}
}).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
Create method requestLocationAccess where you will access location
public void requestLocationAccess(){
LocationRequest mLocationRequest = new LocationRequest();
mLocationRequest.setInterval((long) (LocationHelper.UPDATE_INTERVAL_IN_MILLISECONDS*1.1));
mLocationRequest.setFastestInterval(LocationHelper.UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
final LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(mLocationRequest);
builder.setAlwaysShow(true); //this is the key ingredient
com.google.android.gms.common.api.PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>(){
#Override
public void onResult(#NonNull LocationSettingsResult result){
if(requester != null){
final Status resultStatus = result.getStatus();
switch(resultStatus.getStatusCode()){
case LocationSettingsStatusCodes.SUCCESS:
PendingResult<Status> pendingResult = LocationServices.FusedLocationApi.requestLocationUpdates(
googleApiClient, locationRequest, YourActivity.this);
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user a dialog.
ActivityCompat.requestPermissions(YourActivity.this, new String[]{ACCESS_FINE_LOCATION}, REQUEST_LOCATION);
try{
resultStatus.startResolutionForResult(this, REQUEST_LOCATION);
break;
}catch(IntentSender.SendIntentException ignored){}
}
}
}
}
});
}
Then implement GoogleApliClient callback onConnected where you can get user location simply
#Override
public void onConnected(#Nullable Bundle bundle) {
if (ContextCompat
.checkSelfPermission(this,
ACCESS_FINE_LOCATION)== PackageManager.PERMISSION_GRANTED) {
location = LocationServices.FusedLocationApi.getLastLocation(
googleApiClient);
}
}

Unable to get location co-ordinates and display them on screen

My requirement is very simple.
I want to get the user's location and display the same on screen.
The emulator shows Currently reported location correctly. But I am unable to extract the same to my TextView. Not quite sure what is wrong here.
Please find my code below. Help appreciated.
MainActivity.java
package com.varun.weatherbee;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;
import java.util.List;
public class MainActivity extends AppCompatActivity implements LocationListener {
private final static String TAG = MainActivity.class.getSimpleName();
TextView mLongitudeText;
TextView mLatitudeText;
LocationManager locationManager;
Location location;
double latitude;
double longitutde;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLatitudeText = (TextView) findViewById(R.id.mLatitudeText);
mLongitudeText = (TextView) findViewById(R.id.mLongitudeText);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
List<String> providers = locationManager.getAllProviders();
for (int i = 0; i < providers.size(); i++) {
Log.i(TAG, providers.get(i));
}
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
Log.i(TAG, "Permission Granted");
return;
}
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
mLatitudeText.setText("Latitude: " + location.getLatitude());
mLongitudeText.setText("Longitude: " + location.getLongitude());
}
}
#Override
protected void onStart() {
super.onStart();
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 1000, this);
}
#Override
protected void onStop() {
super.onStop();
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.removeUpdates(this);
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
}

try this code:
1.your runtime permission check is wrong
2.Also getLastKnownLocation(LocationManager.GPS_PROVIDER) can return null See here
3.You can change textview with updated location in onLocationChanged() method
here is a simple example:
public class MainActivity extends AppCompatActivity implements LocationListener {
private final static String TAG = MainActivity.class.getSimpleName();
TextView mLongitudeText;
TextView mLatitudeText;
LocationManager locationManager;
Location location;
double latitude;
double longitutde;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLatitudeText = (TextView) findViewById(R.id.mLatitudeText);
mLongitudeText = (TextView) findViewById(R.id.mLongitudeText);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
List<String> providers = locationManager.getAllProviders();
for (int i = 0; i < providers.size(); i++) {
Log.i(TAG, providers.get(i));
}
//location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (isLocationPermissionGranted()) {
location = getLastKnownLocation();
if (location != null) {
mLatitudeText.setText("Latitude: " + location.getLatitude());
mLongitudeText.setText("Longitude: " + location.getLongitude());
}
}
}
private Location getLastKnownLocation() {
locationManager = (LocationManager) getApplicationContext().getSystemService(LOCATION_SERVICE);
List<String> providers = locationManager.getProviders(true);
Location bestLocation = null;
for (String provider : providers) {
Location l = locationManager.getLastKnownLocation(provider);
if (l == null) {
continue;
}
if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
// Found best last known location: %s", l);
bestLocation = l;
}
}
return bestLocation;
}
#Override
protected void onStart() {
super.onStart();
if (isLocationPermissionGranted())
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 1000, this);
}
#Override
protected void onStop() {
super.onStop();
locationManager.removeUpdates(this);
}
#Override
public void onLocationChanged(Location location) {
mLatitudeText.setText("Latitude: " + location.getLatitude());
mLongitudeText.setText("Longitude: " + location.getLongitude());
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
public boolean isLocationPermissionGranted() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
Log.v(TAG, "Permission is granted");
return true;
} else {
Log.v(TAG, "Permission is revoked");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
return false;
}
} else { //permission is automatically granted on sdk<23 upon installation
Log.v(TAG, "Permission is granted");
return true;
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.v(TAG, "Permission: " + permissions[0] + "was " + grantResults[0]);
//resume tasks needing this permission
}
}
}

How can I get continuous location updates in Android like in Google Maps?

I'm building a friend tracking android app. While my friend activated the app and goes away along with his GPS and cellular data on, I need to track him on my device. That's the concept.
I've implemented LocationListener class and now I can get the last updated location either from Gps or Network but is not updated unless I launch Google Maps and return to my application. After googling, I learned that location cache is updated only by GMaps.!
Is there an alternate way to continuously update location?
What if when I need to get continues location after the device locked without making use of Wakelock?
This is my location listener class:
package com.amazinginside;
/** AMAZING LOCATION SUPPORT CLASS, Devoloped By SANGEETH NANDAKUMAR */
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
public class AmazingLocation extends Service implements LocationListener
{
private final Context mContext;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude=0.0;
double longitude=0.0;
//MINIMUM DISTANCE FOR UPDATE (meters)
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 0 Meters
//MINIMUM TIME BETWEEN UPDATES
private static final long MIN_TIME_BW_UPDATES = 1000 * 0; // 0 Seconds
//LOCATION MANAGER
protected LocationManager locationManager;
//CONSTRUCTOR
public AmazingLocation(Context context)
{
this.mContext = context;
getLocation();
}
//LOCATION PROVISION
public Location getLocation()
{
try
{
//GET LOCATION MANAGER
locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
//CHECK GPS STATE
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
//CHECK NETWORK STATE
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled)
{
//NO LOCATION PROVIDERS
}
else
{
this.canGetLocation = true;
/** GET LOCATION FROM NETWORK */
//FIRST GET LOCATION FROM NETWORK
if (isNetworkEnabled)
{
//REQUEST LOCATION
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
//START WITH LAST KNOWN LOCATION
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//EXTRACT LOCATION
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
/** GET LOCATION FROM GPS SENSOR */
//THEN GET LOCATION FROM GPS
if (isGPSEnabled)
{
if (location == null)
{
//REQUEST GPS LOCATION
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
//EXTRACT LAST KNOWN LOCATION
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//RETURN LOCATION
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return location;
}
//STOP GPS SENSOR
public void stopUsingGPS()
{
if(locationManager != null)
{
locationManager.removeUpdates(AmazingLocation.this);
}
}
//EXTRACT LATTITUDE
public double getLatitude()
{
if(location != null)
{
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
//EXTACT LONGITUDE
public double getLongitude()
{
if(location != null)
{
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
//CAN I GET THE LOCATION.?
public AmazingStatus canGetLocation()
{
AmazingStatus status=new AmazingStatus();
if(this.canGetLocation)
{
status.setStatus(true);
status.setErrorcode(0);
status.setErrormsg("Task completed");
}
else
{
status.setStatus(false);
status.setErrorcode(145);
status.setErrormsg("Please turn on GPS access manually");
}
return status;
}
//SHOW LOCATION SETTINGS
public AmazingStatus showSettingsAlert()
{
final AmazingStatus status=new AmazingStatus();
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("REQUIRES LOCATION ACCESS");
alertDialog.setMessage("Please allow GPS access to this app");
//POSSITIVE REPLY
alertDialog.setPositiveButton("Allow", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog,int which)
{
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
status.setStatus(true);
status.setErrorcode(0);
status.setErrormsg("Task completed");
}
});
//NEGATIVE REPLY
alertDialog.setNegativeButton("Deny", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
status.setStatus(false);
status.setErrorcode(408);
status.setErrormsg("User denied permission");
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
return status;
}
//UNUSED OVERRIDE METHORDS...
#Override
public void onLocationChanged(Location location)
{
getLocation();
}
#Override
public void onProviderDisabled(String provider)
{
}
#Override
public void onProviderEnabled(String provider)
{
getLocation();
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
getLocation();
}
#Override
public IBinder onBind(Intent arg0)
{
return null;
}
}
This my onCreate() method:
#Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//CREATE A BUTTON HANDLER
Button start_btn=(Button)findViewById(R.id.start_location_streaming);
//ON BUTTON CLICK EVENT
start_btn.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
//REPEAT A METHORD AT SPECIFIC INTERVALS
Timer myTimer = new Timer();
myTimer.schedule(new TimerTask()
{
#Override
public void run()
{
TimerMethod();
}
}, 0, 8000);
}
}); }
These are other methods:
private void TimerMethod()
{
//START METHORD
this.runOnUiThread(Timer_Tick);
}
//LOCATION REPORTING METHORD
private Runnable Timer_Tick = new Runnable()
{
public void run()
{
Toast.makeText(MainActivity.this, "Current latitude : "+Double.toString(getLocation().latitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MainActivity.this, "Current longitude : "+Double.toString(getLocation().longitude), Toast.LENGTH_SHORT).show();
}
};
private LatLng getLocation()
{
//CREATE A LOCATION CLASS INSTANCE
AmazingLocation gps = new AmazingLocation(this);
//RETRIVE LOCATION
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
//RETURN LOCATION
LatLng loc=new LatLng(latitude,longitude);
return loc;
}
Now the problem is, the toast just shows previously known the location and not updating unless I opened Google Maps and returned.
Any help will be great for me.

Use Fused location provider in Android set your interval in that:
For an example create your activity like this:
public class LocationActivity extends Activity implements
LocationListener,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private static final String TAG = "LocationActivity";
private static final long INTERVAL = 1000 * 10;
private static final long FASTEST_INTERVAL = 1000 * 5;
Button btnFusedLocation;
TextView tvLocation;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mCurrentLocation;
String mLastUpdateTime;
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "onCreate ...............................");
//show error dialog if GoolglePlayServices not available
if (!isGooglePlayServicesAvailable()) {
finish();
}
createLocationRequest();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
setContentView(R.layout.activity_main);
tvLocation = (TextView) findViewById(R.id.tvLocation);
btnFusedLocation = (Button) findViewById(R.id.btnShowLocation);
btnFusedLocation.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
updateUI();
}
});
}
#Override
public void onStart() {
super.onStart();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
Log.d(TAG, "Location update resumed .....................");
}
}
#Override
public void onStop() {
super.onStop();
Log.d(TAG, "onStop fired ..............");
mGoogleApiClient.disconnect();
Log.d(TAG, "isConnected ...............: " + mGoogleApiClient.isConnected());
}
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
return false;
}
}
#Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "onConnected - isConnected ...............: " + mGoogleApiClient.isConnected());
startLocationUpdates();
}
protected void startLocationUpdates() {
PendingResult<Status> pendingResult = LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
Log.d(TAG, "Location update started ..............: ");
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.d(TAG, "Connection failed: " + connectionResult.toString());
}
#Override
public void onLocationChanged(Location location) {
Log.d(TAG, "Firing onLocationChanged..............................................");
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
updateUI();
}
private void updateUI() {
Log.d(TAG, "UI update initiated .............");
if (null != mCurrentLocation) {
String lat = String.valueOf(mCurrentLocation.getLatitude());
String lng = String.valueOf(mCurrentLocation.getLongitude());
tvLocation.setText("At Time: " + mLastUpdateTime + "\n" +
"Latitude: " + lat + "\n" +
"Longitude: " + lng + "\n" +
"Accuracy: " + mCurrentLocation.getAccuracy() + "\n" +
"Provider: " + mCurrentLocation.getProvider());
} else {
Log.d(TAG, "location is null ...............");
}
}
#Override
protected void onPause() {
super.onPause();
stopLocationUpdates();
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
Log.d(TAG, "Location update stopped .......................");
}
#Override
public void onResume() {
super.onResume();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
Log.d(TAG, "Location update resumed .....................");
}
}
}
Google play services required:

To get continiuos location update, you can refer to the above provided answers .
But You can also make use of LocationServices which is faster than other approaches and much easy and efficient to get location.
This approach is quit long but kindly follow all the provided steps
So let me provide a brief working :
Add these two dependencies in your gradle app file
implementation 'com.google.android.gms:play-services-maps:17.0.0'
implementation 'com.google.android.gms:play-services-location:17.0.0'
Add these permissions in the manifest file outside applicationtag
Declare variable outside onCreate
private FusedLocationProviderClient fusedLocationClient;
private LocationRequest mLocationRequest;
private LocationCallback mlocationCallback;
private LocationSettingsRequest.Builder builder;
private static final int REQUEST_CHECK_SETTINGS = 102;
Now inside onCreate :
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
fetchLastLocation();
mlocationCallback = new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
if (locationResult == null) {
return;
}
for (Location location : locationResult.getLocations()) {
// Update UI with location data
// ...
Log.e("CONTINIOUSLOC: ", location.toString());
}
};
};
mLocationRequest = createLocationRequest();
builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
checkLocationSetting(builder);
No define fetchLastLocation method
private void fetchLastLocation() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// Activity#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for Activity#requestPermissions for more details.
// Toast.makeText(MainActivity.this, "Permission not granted, Kindly allow permission", Toast.LENGTH_LONG).show();
showPermissionAlert();
return;
}
}
fusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener() {
#Override
public void onSuccess(Location location) {
// Got last known location. In some rare situations this can be null.
if (location != null) {
// Logic to handle location object
Log.e("LAST LOCATION: ", location.toString()); // You will get your last location here
}
}
});
}
Now define other two method for permission request
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
switch (requestCode) {
case 123: {
// If request is cancelled, the result arrays are empty.
if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
// permission was denied, show alert to explain permission
showPermissionAlert();
}else{
//permission is granted now start a background service
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
fetchLastLocation();
}
}
}
}
}
private void showPermissionAlert(){
if (ActivityCompat.checkSelfPermission(MainHomeActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(MainHomeActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainHomeActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION}, 123);
}
}
now define createLocationRequest method and checkLocationSetting method :
protected LocationRequest createLocationRequest() {
LocationRequest mLocationRequest = LocationRequest.create();
mLocationRequest.setInterval(30000);
mLocationRequest.setFastestInterval(10000);
mLocationRequest.setSmallestDisplacement(30);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
return mLocationRequest;
}
private void checkLocationSetting(LocationSettingsRequest.Builder builder) {
SettingsClient client = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task = client.checkLocationSettings(builder.build());
task.addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
#Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
startLocationUpdates();
return;
}
});
task.addOnFailureListener(this, new OnFailureListener() {
#Override
public void onFailure(#NonNull final Exception e) {
if (e instanceof ResolvableApiException) {
// Location settings are not satisfied, but this can be fixed
AlertDialog.Builder builder1 = new AlertDialog.Builder(mContext);
builder1.setTitle("Continious Location Request");
builder1.setMessage("This request is essential to get location update continiously");
builder1.create();
builder1.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
ResolvableApiException resolvable = (ResolvableApiException) e;
try {
resolvable.startResolutionForResult(MainHomeActivity.this,
REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e1) {
e1.printStackTrace();
}
}
});
builder1.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(mContext, "Location update permission not granted", Toast.LENGTH_LONG).show();
}
});
builder1.show();
}
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if (requestCode == REQUEST_CHECK_SETTINGS) {
if (resultCode == RESULT_OK) {
// All location settings are satisfied. The client can initialize
// location requests here.
startLocationUpdates();
}
else {
checkLocationSetting(builder);
}
}
}
now atlast define startLocationUpdates and stopLocationUpdates method :
public void startLocationUpdates() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// Activity#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for Activity#requestPermissions for more details.
return;
}
}
fusedLocationClient.requestLocationUpdates(mLocationRequest,
mlocationCallback,
null /* Looper */);
}
private void stopLocationUpdates() {
fusedLocationClient.removeLocationUpdates(mlocationCallback);
}
Note : Replace context with your class context and call stopLocationUpdates() inside onDestroy method of your class
Note : For any futher information or doubt you can refer to :
https://developer.android.com/training/location/retrieve-current
https://developer.android.com/training/location/change-location-settings
https://developer.android.com/training/location/receive-location-updates
You will get your location in Logcat.
Hope this will hope you or somebody else !

I believe rather than reinventing the wheel, you can use one of the third party libraries that are easy to implement and in this case, battery efficient. One of the library I found is SmartLocation. You can add the following dependency in your build.gradle (app) to start using the library.
compile 'io.nlopez.smartlocation:library:3.2.9'
After adding the dependency, you should rebuild the project to get the references.
As an example you can try the following code in your Activity.
Button start_btn=(Button)findViewById(R.id.start_location_streaming);
Context context = start_btn.getContext();
Handler handler = new Handler();
start_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SmartLocation.with(context).location().start(locationListener);
}
});
OnLocationUpdatedListener locationListener = new OnLocationUpdatedListener({
#Override
public void onLocationUpdated(Location location) {
double lat = location.getLatitude();
double lng = location.getLongitude();
handler.postDelayed(locationRunnable,8000);
}
});
Runnable locationRunnable = new Runnable({
#Override
public void run() {
SmartLocation.with(context).location().start(locationListener);
}
});
You can stop location tracking in onStop() method
#Override
public void onStop() {
SmartLocation.with(context).location().stop();
super.onStop();
}
SmartLocation library will give you more than what is expected, just try that once.
Note: Make sure your application does have ACCESS_FINE_LOCATION and ACCESS_COARSE_LOCATION (both) to have accurate results. Don't forget to ask for permissions at runtime for Android 6.0 and above.

You should use android services, rather than the app itself. This way you will achieve to run code continuously in the background and you will receive the location even if the app closes.
https://www.tutorialspoint.com/android/android_services.htm

Android- Get GPS location

I'm doing a project where i need to get the gps location when an anomaly occurs.
How i call/start the gps location in a method inside my Anomaly class?
So i have a class Anomaly and i've used this class to get the gps location:
import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.widget.TextView;
public class GPS extends Activity {
private LocationManager locationManager;
private LocationListener locationListener;
private TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
textView.append("\n "+location.getLatitude()+" "+location.getLongitude());
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
};
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{
Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.INTERNET
}, 10);
}
}else {
updateGPS();
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case 10:
if (grantResults.length>0 && grantResults[0]== PackageManager.PERMISSION_GRANTED)
updateGPS();
}
}
public void updateGPS() {
locationManager.requestLocationUpdates("gps", 3600000, 0, locationListener);
}
}
this is my class Anormaly (i'm a begginer so i don´t know what i should extend and if i need to start a new intent)
public class Anomaly extends AppCompatActivity{
private GPS gps;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.data);
}
public void abnormalHRDetected(int heartRateInt) {
if (heartRateInt < 40 || heartRateInt > 120) {
Intent intent = new Intent(this, GPS.class);
startActivity(intent);
finish();
}
}
It's simple. I'm receiving the heart rate and i put that on a screen "data". When the value of the heart rate it's lower than 40 or bigger than 120 occurs an anomaly and i want get the gps location at the moment (to send to a data base not to put that on the screen) sorry about my english

Make sure you should give access_gps and access_finelocation permissions in your manifest file.
The below code may help you to fix your problem
import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.widget.TextView;
public class GPS extends Activity {
private LocationManager locationManager;
private LocationListener locationListener;
private TextView textView;
Location cLocation;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
#Override
public void onProviderDisabled(String provider) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
};
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{
Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.INTERNET
}, 10);
}
}else {
cLocation = updateGPS();
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case 10:
if (grantResults.length>0 && grantResults[0]== PackageManager.PERMISSION_GRANTED)
cLocation = updateGPS(); //In update gps method the textview will set to current lat & long values and it returns the current location to your cLocation variable, if you wana use that values further you can use with cLocation variable.
}
}
public Location updateGPS() {
Location currentLocation;
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
textView.append("\n "+location.getLatitude()+" "+location.getLongitude());
currentLocation = location;
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
locationManager.requestLocationUpdates("gps", 3600000, 0, locationListener);
}
return currentLocation;
}
}

Refer this link
https://github.com/HariKrish4/TurnNavigation
import android.Manifest;
import android.content.pm.PackageManager;
import android.graphics.Point;
import android.location.Location;
import android.os.Handler;
import android.os.SystemClock;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.Projection;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.ArrayList;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private static final int MY_PERMISSION_ACCESS_FINE_LOCATION = 100;
private GoogleMap mMap;
ArrayList<LatLng> list = new ArrayList<>();
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
private LocationRequest mLocationRequest;
private Marker marker;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
// Create an instance of GoogleAPIClient.
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
getDirections();
}
private void getDirections() {
// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(this);
String url = "https://maps.googleapis.com/maps/api/directions/json?origin=triplicane,chennai&destination=saidapet,chennai&sensor=false";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
// Display the first 500 characters of the response string.
try {
JSONObject json = new JSONObject(response);
JSONArray routeArray = json.getJSONArray("routes");
JSONObject routes = routeArray.getJSONObject(0);
JSONObject overviewPolylines = routes
.getJSONObject("overview_polyline");
String encodedString = overviewPolylines.getString("points");
list = decodePoly(encodedString);
// Polylines are useful for marking paths and routes on the map.
mMap.addPolyline(new PolylineOptions().geodesic(true)
.addAll(list)
);
} catch (Exception e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
// Add the request to the RequestQueue.
queue.add(stringRequest);
}
private ArrayList<LatLng> decodePoly(String encoded) {
ArrayList<LatLng> poly = new ArrayList<LatLng>();
int index = 0, len = encoded.length();
int lat = 0, lng = 0;
while (index < len) {
int b, shift = 0, result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
LatLng p = new LatLng((((double) lat / 1E5)),
(((double) lng / 1E5)));
poly.add(p);
}
return poly;
}
#Override
public void onConnected(#Nullable Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSION_ACCESS_FINE_LOCATION);
} else {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
putNavigationMarker();
createLocationRequest();
startLocationUpdates();
}
}
private void startLocationUpdates() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}else {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10000);
mLocationRequest.setFastestInterval(5000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
private void putNavigationMarker() {
LatLng mapCenter = new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude());
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(mapCenter, 13));
// Flat markers will rotate when the map is rotated,
// and change perspective when the map is tilted.
marker = mMap.addMarker(new MarkerOptions()
.icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_navigation_black_48dp))
.position(mapCenter)
.flat(true)
.rotation(245));
CameraPosition cameraPosition = CameraPosition.builder()
.target(mapCenter)
.zoom(16)
.bearing(90)
.build();
// Animate the change in camera view over 2 seconds
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition),
2000, null);
}
public void animateMarker(final Marker marker, final LatLng toPosition,
final boolean hideMarker) {
final Handler handler = new Handler();
final long start = SystemClock.uptimeMillis();
Projection proj = mMap.getProjection();
Point startPoint = proj.toScreenLocation(marker.getPosition());
final LatLng startLatLng = proj.fromScreenLocation(startPoint);
final long duration = 500;
final Interpolator interpolator = new LinearInterpolator();
handler.post(new Runnable() {
#Override
public void run() {
long elapsed = SystemClock.uptimeMillis() - start;
float t = interpolator.getInterpolation((float) elapsed
/ duration);
double lng = t * toPosition.longitude + (1 - t)
* startLatLng.longitude;
double lat = t * toPosition.latitude + (1 - t)
* startLatLng.latitude;
marker.setPosition(new LatLng(lat, lng));
if (t < 1.0) {
// Post again 16ms later.
handler.postDelayed(this, 16);
} else {
if (hideMarker) {
marker.setVisible(false);
} else {
marker.setVisible(true);
}
}
}
});
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
switch (requestCode) {
case MY_PERMISSION_ACCESS_FINE_LOCATION:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
putNavigationMarker();
} else {
// permission denied
finish();
}
break;
}
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
LatLng mapCenter = new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude());
animateMarker(marker,mapCenter,false);
}
}

I suggest to use the code below, use the interface LocationListener like a parameter. That way you don´t need to start Activity to get Location as in the original code.
Make sure you give ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION and ACCESS_NETWORK_STATE permissions on your manifest file.
public class LocationSuporte
{
private LocationListener mLocationListener;
private final static String TAG = "Location Suporte";
private Context mContext;
public LocationSuporte(Context mContext, LocationListener mLocationListener) {
this.mLocationListener = mLocationListener;
this.mContext = mContext;
}
public boolean isGPSEnable() {
LocationManager lManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
return lManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || lManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}
public boolean isNetworkAvailable() {
final ConnectivityManager connectivityManager = ((ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE));
return connectivityManager.getActiveNetworkInfo() != null && connectivityManager.getActiveNetworkInfo().isConnected();
}
public Location getLocation() {
Location location = null;
LocationManager lManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(mContext,
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) !=
PackageManager.PERMISSION_GRANTED){
return null;
}
try {
boolean isGPSEnabled = this.isGPSEnable();
Log.d(TAG, "isGPSEnabled = " + isGPSEnabled);
boolean isNetworkEnabled = isNetworkAvailable();
Log.d(TAG, "isNetworkEnabled = " + isNetworkEnabled);
if (isNetworkEnabled) {
lManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1, 1, this.mLocationListener);
if (lManager != null) {
location = lManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
}
if (isGPSEnabled && location == null) {
lManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1, 1, this.mLocationListener);
Log.d("GPS Enabled", "GPS Enabled");
if (lManager != null) {
location = lManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
}
} catch (Exception e) {
e.printStackTrace();
}
lManager.removeUpdates(this.mLocationListener);
return location;
}
}
Use example;
public void abnormalHRDetected(int heartRateInt)
{
if (heartRateInt < 40 || heartRateInt > 120) {
Location location = new LocationSuporte(getApplicationContext(), new LocationListener() {
#Override
public void onLocationChanged(Location location) {
Log.d("EXAMPLE","onLocationChanged");
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
Log.d("EXAMPLE","onStatusChanged");
}
#Override
public void onProviderEnabled(String s) {
Log.d("EXAMPLE","onProviderEnabled");
}
#Override
public void onProviderDisabled(String s) {
Log.d("EXAMPLE","onProviderDisabled");
}
}).getLocation();
Log.d("EXAMPLE","\n "+location.getLatitude()+" "+location.getLongitude());
}
}

java.lang.IllegalArgumentException: GoogleApiClient parameter is required

I am trying to Get my location using the Google Play Services.I have added compile 'com.google.android.gms:play-services:8.4.0' in my gradle.Here is the code I am Using :
import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.location.Location;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
public class TestActivity extends Activity implements ConnectionCallbacks,
OnConnectionFailedListener, LocationListener {
// LogCat tag
// private static final String TAG = TestActivity.class.getSimpleName();
private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 1000;
// Google client to interact with Google API
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation = LocationServices.FusedLocationApi
.getLastLocation(mGoogleApiClient);
// boolean flag to toggle periodic location updates
private boolean mRequestingLocationUpdates = false;
private LocationRequest mLocationRequest;
// Location updates intervals in sec
private static int UPDATE_INTERVAL = 10000; // 10 sec
private static int FATEST_INTERVAL = 5000; // 5 sec
private static int DISPLACEMENT = 10; // 10 meters
// UI elements
private TextView lblLocation;
private Button btnShowLocation, btnStartLocationUpdates;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lblLocation = (TextView) findViewById(R.id.lblLocation);
btnShowLocation = (Button) findViewById(R.id.btnShowLocation);
btnStartLocationUpdates = (Button) findViewById(R.id.btnLocationUpdates);
// First we need to check availability of play services
if (checkPlayServices()) {
// Building the GoogleApi client
buildGoogleApiClient();
createLocationRequest();
}
// Show location button click listener
btnShowLocation.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
displayLocation();
}
});
// Toggling the periodic location updates
btnStartLocationUpdates.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
togglePeriodicLocationUpdates();
}
});
}
#Override
protected void onStart() {
super.onStart();
if (mGoogleApiClient != null) {
mGoogleApiClient.connect();
}
}
#Override
protected void onResume() {
super.onResume();
checkPlayServices();
// Resuming the periodic location updates
if (mGoogleApiClient.isConnected() && mRequestingLocationUpdates) {
startLocationUpdates();
}
}
#Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
#Override
protected void onPause() {
super.onPause();
stopLocationUpdates();
}
/**
* Method to display the location on UI
* */
private void displayLocation() {
if (Build.VERSION.SDK_INT > 22) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
}
mLastLocation = LocationServices.FusedLocationApi
.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
double latitude = mLastLocation.getLatitude();
double longitude = mLastLocation.getLongitude();
lblLocation.setText(latitude + ", " + longitude);
} else {
lblLocation
.setText("(Couldn't get the location. Make sure location is enabled on the device)");
}
}
/**
* Method to toggle periodic location updates
* */
private void togglePeriodicLocationUpdates() {
if (!mRequestingLocationUpdates) {
// Changing the button text
btnStartLocationUpdates
.setText(getString(R.string.btn_stop_location_updates));
mRequestingLocationUpdates = true;
// Starting the location updates
startLocationUpdates();
Log.d("TAG ", "Periodic location updates started!");
} else {
// Changing the button text
btnStartLocationUpdates
.setText(getString(R.string.btn_start_location_updates));
mRequestingLocationUpdates = false;
// Stopping the location updates
stopLocationUpdates();
Log.d("TAG", "Periodic location updates stopped!");
}
}
/**
* Creating google api client object
* */
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API).build();
}
/**
* Creating location request object
* */
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FATEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setSmallestDisplacement(DISPLACEMENT);
}
/**
* Method to verify google play services on the device
* */
private boolean checkPlayServices() {
int resultCode = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS) {
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
GooglePlayServicesUtil.getErrorDialog(resultCode, this,
PLAY_SERVICES_RESOLUTION_REQUEST).show();
} else {
Toast.makeText(getApplicationContext(),
"This device is not supported.", Toast.LENGTH_LONG)
.show();
finish();
}
return false;
}
return true;
}
/**
* Starting the location updates
* */
protected void startLocationUpdates() {
if (Build.VERSION.SDK_INT > 22) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
}
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
/**
* Stopping location updates
*/
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
}
/**
* Google api callback methods
*/
#Override
public void onConnectionFailed(ConnectionResult result) {
Log.i("TAG", "Connection failed: ConnectionResult.getErrorCode() = "
+ result.getErrorCode());
}
#Override
public void onConnected(Bundle arg0) {
// Once connected with google api, get the location
displayLocation();
if (mRequestingLocationUpdates) {
startLocationUpdates();
}
}
#Override
public void onConnectionSuspended(int arg0) {
mGoogleApiClient.connect();
}
#Override
public void onLocationChanged(Location location) {
// Assign the new location
mLastLocation = location;
Toast.makeText(getApplicationContext(), "Location changed!",
Toast.LENGTH_SHORT).show();
// Displaying the new location on UI
displayLocation();
}
}
But from Logcat I am Having this error, Which makes no sense to me as I have called buildGoogleApiClient();before any Operation in my existing code. Please see my logcat output:
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.bourne.location/com.example.bourne.location.TestActivity}: java.lang.IllegalArgumentException: GoogleApiClient parameter is required.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2264)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)

Looks like you are using your mGoogleApiClient before it is initialized.
The initialization of
private Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
should be done after you have initialized mGoogleApiClient in onCreate.
So change to
private Location mLastLocation;
and add
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
in your onCreate after buildGoogleApiClient();

I also got the same problem. But it got solved by doing these following steps:
Add the following meta-data tag in the andriod manifest file, note google_play_services_version is given a value of 8487000
<activity android:name=".MainActivity" android:label="#string/app_name" >
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version"/>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
In app level build.gradle , add the following line in dependencies:
compile 'com.google.android.gms:play-services-location:8.4.0'